I can live in any city I dream about, and thought I would prove it. It is hard to know, but I think France may be the most expensive country on the planet. I have not been to Tokyo, but maybe a challenge, and of course, New York City is a pain. I have stayed in London, and it is cheaper than France. Germany is a lot cheaper, I stayed one month in Barcelona, Spain, so that was very cheap. Italy is a pain in the butt, but I think easy to find a 400 USD per month apartment there, but all in all, I just like the off the path, off the wall countries much more. Read about strategy as I DAILY update this page. http://www.hobotraveler.com/strategies-for-travel/an-example-of-travel-strategy-used-on-trip-to-city-of-tours-france-for-one-month.php